/*
 * Copyright (c) 2011 Salzburg Research.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package at.newmedialab.skwrl.api;

import java.util.Set;

/**
 * A listener for updates in a triple store. Needed to support incremental reasoning. Implemented by
 * the reasoning engine. The SKWRLBackend should provide a means to register a TripleUpdateListener.
 * <p/>
 * Author: Sebastian Schaffert
 */
public interface TripleUpdateListener<Triple> {

    /**
     * Process a triple update to the RDF backend with the added and removed triples passed as argument.
     *
     * @param addedTriples   the triples that have been added during the update
     * @param removedTriples the triples that have been removed during the update
     */
    public void processTripleUpdate(Set<Triple> addedTriples, Set<Triple> removedTriples);

}
